Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord
The diversity and abundance of retrievable pelagic heterotrophic bacteria in Kongsfjorden, an Arctic fjord, was studied during the summer of 2011 (June, August, and September). Retrievable bacterial load ranged from 103 to 107 CFU L−1 in June, while it was 104–106 CFU L−1 in August and September. Ba...
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ftpubmed:oai:pubmedcentral.nih.gov:5221401 2023-05-15T14:49:24+02:00 Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord Sinha, Rupesh Kumar Krishnan, Kottekkatu Padinchati Hatha, Ammanamveetil Abdulla Mohamed Rahiman, Mujeeb Thresyamma, Divya David Kerkar, Savita 2016-10-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5221401/ http://www.ncbi.nlm.nih.gov/pubmed/28029589 https://doi.org/10.1016/j.bjm.2016.09.011 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5221401/ http://www.ncbi.nlm.nih.gov/pubmed/28029589 http://dx.doi.org/10.1016/j.bjm.2016.09.011 © 2016 Sociedade Brasileira de Microbiologia. Published by Elsevier Editora Ltda. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). CC-BY-NC-ND Environmental Microbiology Text 2016 ftpubmed https://doi.org/10.1016/j.bjm.2016.09.011 2017-01-22T01:07:13Z The diversity and abundance of retrievable pelagic heterotrophic bacteria in Kongsfjorden, an Arctic fjord, was studied during the summer of 2011 (June, August, and September). Retrievable bacterial load ranged from 103 to 107 CFU L−1 in June, while it was 104–106 CFU L−1 in August and September. Based on 16S rRNA gene sequence similarities, a higher number of phylotypes was observed during August (22 phylotypes) compared to that during June (6 phylotypes) and September (12 phylotypes). The groups were classified into four phyla: Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes. Bacteroidetes was represented only by a single member Leewenhoekiella aequorea during the three months and was dominant (40%) in June. However, this dominance changed in August to a well-known phytopathogenic species Rhodococcus fascians (32%), which could be a result of decrease in the phytoplankton biomass following the secondary bloom. It is the first report of Halomonas titanicae isolation from the Arctic waters. It showed an increase in its abundance with the intrusion of Atlantic water into Kongsfjorden. Increased abundance of Psychrobacter species in the late summer months coincided with the presence of cooler waters. Thus, the composition and function of heterotrophic bacterial community was fundamentally different in different months. This could be linked to the changes in the water masses and/or phytoplankton bloom dynamics occurring in Arctic summer. Text Arctic Kongsfjord* Kongsfjorden Phytoplankton PubMed Central (PMC) Arctic Brazilian Journal of Microbiology 48 1 51 61 |
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Environmental Microbiology |
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Environmental Microbiology Sinha, Rupesh Kumar Krishnan, Kottekkatu Padinchati Hatha, Ammanamveetil Abdulla Mohamed Rahiman, Mujeeb Thresyamma, Divya David Kerkar, Savita Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
topic_facet |
Environmental Microbiology |
description |
The diversity and abundance of retrievable pelagic heterotrophic bacteria in Kongsfjorden, an Arctic fjord, was studied during the summer of 2011 (June, August, and September). Retrievable bacterial load ranged from 103 to 107 CFU L−1 in June, while it was 104–106 CFU L−1 in August and September. Based on 16S rRNA gene sequence similarities, a higher number of phylotypes was observed during August (22 phylotypes) compared to that during June (6 phylotypes) and September (12 phylotypes). The groups were classified into four phyla: Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes. Bacteroidetes was represented only by a single member Leewenhoekiella aequorea during the three months and was dominant (40%) in June. However, this dominance changed in August to a well-known phytopathogenic species Rhodococcus fascians (32%), which could be a result of decrease in the phytoplankton biomass following the secondary bloom. It is the first report of Halomonas titanicae isolation from the Arctic waters. It showed an increase in its abundance with the intrusion of Atlantic water into Kongsfjorden. Increased abundance of Psychrobacter species in the late summer months coincided with the presence of cooler waters. Thus, the composition and function of heterotrophic bacterial community was fundamentally different in different months. This could be linked to the changes in the water masses and/or phytoplankton bloom dynamics occurring in Arctic summer. |
format |
Text |
author |
Sinha, Rupesh Kumar Krishnan, Kottekkatu Padinchati Hatha, Ammanamveetil Abdulla Mohamed Rahiman, Mujeeb Thresyamma, Divya David Kerkar, Savita |
author_facet |
Sinha, Rupesh Kumar Krishnan, Kottekkatu Padinchati Hatha, Ammanamveetil Abdulla Mohamed Rahiman, Mujeeb Thresyamma, Divya David Kerkar, Savita |
author_sort |
Sinha, Rupesh Kumar |
title |
Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
title_short |
Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
title_full |
Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
title_fullStr |
Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
title_full_unstemmed |
Diversity of retrievable heterotrophic bacteria in Kongsfjorden, an Arctic fjord |
title_sort |
diversity of retrievable heterotrophic bacteria in kongsfjorden, an arctic fjord |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5221401/ http://www.ncbi.nlm.nih.gov/pubmed/28029589 https://doi.org/10.1016/j.bjm.2016.09.011 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Kongsfjord* Kongsfjorden Phytoplankton |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Phytoplankton |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5221401/ http://www.ncbi.nlm.nih.gov/pubmed/28029589 http://dx.doi.org/10.1016/j.bjm.2016.09.011 |
op_rights |
© 2016 Sociedade Brasileira de Microbiologia. Published by Elsevier Editora Ltda. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.bjm.2016.09.011 |
container_title |
Brazilian Journal of Microbiology |
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48 |
container_issue |
1 |
container_start_page |
51 |
op_container_end_page |
61 |
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1766320444404662272 |